I'm all thumbs today and keep dropping things.
all thumbs
idiomClumsy; awkward; not dextrous.
Origin
first recorded 16th c.From the proverb "when he should get aught, each finger is a thumb", from John Heywood's Collection of 1546.
He tried to fix the watch but was all thumbs and made it worse.
The nervous apprentice, usually skilled with delicate instruments, became all thumbs the moment the master craftsman entered the workshop.